body {
  font-family: Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;    /* horizontal center */
  min-height: 100vh;
  margin: 0;
  background: #f4f4f4;
}

form {
  background: #fff;
  padding: 20px;
  border: 1px solid #ddd;
  border-radius: 8px;
  min-width: 200px;
}

label {
  display: block;
  width: 100%;
}

input {
  display: block;
  width: 180px;
  padding: 10px;
  margin: 5px 0;
}

button {
  display: block;
  width: 200px;
  padding: 10px;
  margin-top: 0.5rem;
  margin-top: 0.8rem;
  cursor: pointer;
}

header button {
  height: 40px !important;
  padding: 0 20px !important;  
  line-height: 40px !important;  
  width: auto !important;
  margin: auto !important;
  display: inline-block;
}

ul.nav-links {
  display: flex;
  flex-direction: row;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

ul.nav-links > li {
  margin: 0;
  padding: 0;
}

a.nav-link {
  background: #23272b;
  color: #fff;
  padding: 10px 20px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: bold;
  transition: background 0.2s;
  display: inline-block;
}

a.nav-link:hover {
  background: #54595f;
}

.oops {
  color: #7D2C6C;
}